/Engine/Source/Runtime/Engine/Public/Physics/Experimental/PhysScene_Chaos.h
Register a component for physics replication state caching, the component will deregister automatically if cache is not accessed within timelimit set by CVar: np2.ReplicationCache.LingerForNSeconds
void RegisterForReplicationCache ( [UPrimitiveComponent](API\Runtime\Engine\Components\UPrimitiveComponent) * RootComponent )